<template>
  <el-upload
    class="avatar-uploader"
    action="https://jsonplaceholder.typicode.com/posts/"
    :show-file-list="false"
    :before-upload="beforeAvatarUpload"
    :http-request="customUpload"
  >
    <img v-if="imageUrl" :src="imageUrl" class="avatar">
    <i v-else class="el-icon-plus avatar-uploader-icon" />
    <el-progress v-show="showProgress" type="circle" :percentage="percent" class="progress" />
  </el-upload>
</template>

<style>
.avatar-uploader .el-upload {
  border: 1px dashed #d9d9d9;
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.avatar-uploader .el-upload:hover {
  border-color: #409EFF;
}

.avatar-uploader-icon {
  font-size: 28px;
  color: #8c939d;
  width: 178px;
  height: 178px;
  line-height: 178px;
  text-align: center;
}

.avatar {
  width: 178px;
  height: 178px;
  display: block;
}
</style>

<script>
// 导入 cos 模块
const COS = require('cos-js-sdk-v5')

// SECRETID 和 SECRETKEY请登录 https://console.cloud.tencent.com/cam/capi 进行查看和管理
var cos = new COS({
  SecretId: 'AKID4yby4tRjkPq1uWrwlIYXEfphJeiV1FCs',
  SecretKey: 'RbT4OSEj49xWopZ1D7k59wSgdJipfiV1'
})
export default {
  data() {
    return {
      imageUrl: '',
      showProgress: false,
      percent: 0
    }
  },
  methods: {
    beforeAvatarUpload(file) {
      const isJPG = (file.type === 'image/jpeg') || (file.type === 'image/png')
      const isLt2M = file.size / 1024 / 1024 < 2

      if (!isJPG) {
        this.$message.error('上传头像图片只能是 JPG 格式!')
      }
      if (!isLt2M) {
        this.$message.error('上传头像图片大小不能超过 2MB!')
      }
      return isJPG && isLt2M
    },
    // 自定义上传
    customUpload(res) {
      if (res.file) {
        this.showProgress = true
        cos.putObject({
          Bucket: 'hmhr-1306733238', // 存储桶的名称，必须
          Region: 'ap-shanghai', // 存储桶所在地域，必须字段
          Key: res.file.name, // 文件名，必须
          StorageClass: 'STANDARD', // 上传模式, 标准模式
          Body: res.file, // 上传文件对象
          // 上传进度条
          onProgress: function(progressData) {
            this.percent = progressData.percent * 100
          }
        }, (err, data) => {
          if (err === null && data.statusCode === 200) {
            this.imageUrl = `https://${data.Location}`
            setTimeout(() => {
              this.showProgress = false
            }, 500)
          }
        })
      }
    }
  }
}
</script>
<style>
.progress {
  position: absolute;
  display: flex;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #e4e4e4;
  border-radius: 50%;
  opacity: 0.9;
}
</style>
